Animals are biologically wired to hide pain to avoid looking vulnerable. Teach followers to look for these subtle behavioral shifts: Reluctance to jump or move as they used to. Changes in grooming (over-grooming a specific spot or stopping altogether). Increased irritability or being less tolerant of other pets. more often than usual, especially in cats. 3. Trending Topics: The "Enrichment" Movement Modern veterinary science emphasizes mental health as much as physical health. Scent Work